Cremains urn

Re: Cremains urn

Mark Paulley

Joe, very interesting, I remember someone on this site had a handy dandy chart showing weight of deceased with volume of space required

Does anyone know who and were this info might be?

Thanks

Re: Cremains urn

jim barbour

Thanks for a handy hint Joe. I am sure lots of us would have eventually arrived at a similar solution, but you beat us to it and I, for one, am appreciative.

Re: Cremains urn

Dwight Rutherford

Here is a calculator I have used for urn size.

https://www.mainelyurns.com/urn-size-chart.html

Thats handy, but how about the math,

Keith Newton

I was trying to remember how to calculate the volume of a sphere, or ovoid.

Seems like 4/3 x pi x r3 ? Or for the egg, which would have 3 different radii, just plug each of them into that last part. Is this correct?

Re: Thats handy, but how about the math,  *LINK*

Mike Stafford

Most of our hollow form internal shapes are probably closer to being a truncated cone.

The formula for a truncated cone is.... Volume= ⅓ π (r12 + r1r2 + r22) H (The second number in each element is a 2 indicating that the radius is squared.) But it is easier to just go to a website and plug in the radii of your estimated truncated cone. See the attached link. http://keisan.casio.com/has10/SpecExec.cgi?id=system/2006/1223372110

I have used this method successfully many times. Once the volume is known it is just a matter of obtaining the correct amount of rice. This is done by converting cubic inches to the equivalent volume in a liquid measuring cup. This link does that for you.

http://www.metric-conversions.org/volume/cubic-inches-to-us-ounces-table.htm

As others have said a good guesstimate of one cubic inch per pound will usually do just fine as long as the internal volume of the hollowed out area is sufficient.


Formula truncated cone

Re: Thats handy, but how about the math,

Joseph Bradshaw

I went the other way, by determining how much a cubic inch of rice would weigh. I then multiplied the body weight of the deceased to get my final volume. since I am building a segmented form, I could add layers or rings to get to the final volume. I did not care to get into complicated math to determine the volume.

Joe

Re: Cremains urn

Dale Gillaspy

I agree with the truncated cone formula listed in this thread. The one cubic inch per pound of body weight is a formula put out by a funeral home association, of sorts. I'm sorry but I don't remember the actual name of the association but it is a guideline they use. I have turned a lot of urns and find it to be a little overkill and have always found there was a lot of room left over, but it is as good a guideline as i can find. I guess it is better to be a little too big than too small.